Lasting machines



April 25, 1961 R. E. PEARSALL LASTING MACHINES 3 Sheets-Sheet 1 Filed March 27, 1959 Z J c r a w 0 a n t NW a mi 05 A n .w [M W G fim w Z 4 April 25, 1961 R. E. PEARSALL LASTING MACHINES 3 Sheets-Sheet 2 Filed March 2'7, 1959 April 25, 1961 R. E. PEARSALL LASTING MACHINES 3 Sheets-Sheet 5 Filed March 27, 1959 United States Patent z,9so,9s DASTING MACHINES Ralph E. Pearsall, Gloucester, Mass., assignor to United v Shoe Machinery Corporation, Flemington, NJ., a corporation of New Jersey 1 Filed Mar. 27, 1959, s... No. 802,348

4 Claims. 01. 12-1 frictional forces on the lasting margin of the stock to be lasted in a direction tending to tension the stock height-- wise of a last and in a direction tending to feed the shoe along, the margin of the tensioned stock then being wiped inwardly over and pressed against the bottom of the shoe to cause the lasting margin to be secured to the bottom of the shoe in lasted position by cement previously applied to the bottom of the shoe and/or to the innersurr face of the lasting margin. Subsequently to the lasting of a shoe on a machine of this type, the overlasted marginof the stock is subjected to a separate abrading or rough-; ing action in order to condition it for the reception of socalled bottoming cement by means of which an outer sole is attached to the bottom of the shoe. It is an object of .this invention to avoid the necessity for such This invention relates to lasting machines of the type 15 wherein a pair of rotary members are arranged to exert shaft 40 by means of a headed screw 42 andhas rotatablyj a separate abrading and roughing operation by providingv a novel and improved lasting machine of the mentioned type in which the lasting and the abrading or roughing operation are simultaneously performed. 1

' With the above object in View, in the herein illustrated machine, which is provided with a pair of rotary members for engaging the opposite sides of the lasting margin of the shoe to be lasted, and with means for so guiding a shoe that these members exert frictional forces tending to tension the stock and to feed the shoe, the peripheral surface of one ofthe rotary members which engage the bottom of the shoe. More particularly, the rotary members may comprise a pair of rolls, while the wiping means which has a continuous action may include a reciprocating wiper and a continuously operating chain wiper. Preferably, and in accordance with another feature of the invention, a third rotary member having a roughened peripheral surface may be arranged coaxially of the ratary'member which has the sharpened teeth, thereby to provide an unroughened portion of the overlasted margin adjacent to the marginal edge of the shoe bottom, and means provided for rotating this third member at the same speedas the member which engages the inside surface of the lasting margin.

The above and other objects and features of the inven-' tion will appear in the following detailed description of the preferred embodiment thereof whichis illustrated in the accompanying drawings and will be pointed out in the'claims.

In the drawings, a

' a will be apparent, when this eccentric, which, is mounted a lasting machine embodying the features of this invention;

Fig. 2 is a view in elevation and at an enlarged scale of the operating elements of the machine as seen from the opposite side of the machine;

- Fig. 3 is a detail view of one of the operating elements with a portion thereof shown in vertical section; and Fig. 4 is a plan view of the operating elements and showing a portion of a shoe being lasted.

Referring to these drawings, the operating elements:

of the machine which is therein illustrated comprise a pair of rolls 10, 12 for tensioning the stock and for feed-' ing the shoe, one of these rolls also being adapted, as will presently appear, to abrade or roughen the outer surface of the lasting margin of the stock being lasted,

a reciprocating wiper 14, and a chain type wiper indicated generally by the reference character 16. These operating elements are supported on and driven by mechanism associated with a machine frame construction, indicated generally by the reference character 18, and an auxiliary frame, indicated by the reference character 20. As shown in Fig.1, these machine frame constructions are supported on the upper end of a column 22 of suitable height. During the lasting operation, the shoe is guided by engagement with an edge gage roll 24 and is held against heightwise movement, in response to the tensioning action of the rolls 10 and 12, by means of a; shoe rest 26. .As shown in Fig. 3, the roll 10 actually comprises a feed wheel 30 and a roughing roll 32.

The feed wheel 30 is secured to, the lower end of a mounted on a sleeve portion 44 the roughing tool 32. The shaft 40 extends upwardly through a bearing 46, associated with the auxiliary frame 20,. Fig. 2, and at its upper end and carries a gear 48 which is in mesh with a drive pinion 50, mounted on the shaft of an electric motor 52, Fig. 1. The roll 12 is mounted on the lower end of a shaft 60 which is journaled in a bearing block 62 formed integrally with an arm 64. This block is iliary frame 20, Fig. 1. The block 67 also carries a hearing for the upper portion of the shaft 60 and this shaft is connected to the shaft 40 by means of loosely meshing pinions 72, 74. A coil spring 76 tends to swing the arm 64 in a clockwise direction, Fig. 1, thereby urging the roll 12 yieldingly toward the roll 10 to the extent permitted by an adjustable stop stud 80 adapted to engage an abutment 82 carried by the arm, Fig. 2. The

tension of the spring 76 may be varied by means of an adjusting lever 84 and locking pin 86, Fig. l.

Secured to the abrading roll 32 is a pinion whichis adapted to be driven at a relatively high speed, as compared to the speed of rotation of the feed wheel 30 and roll 12, by means of a gear train including gears 92, 94,j

96, 98, from a second electric motor 102, Fig. 2. This gear train is mounted on a carrier bracket 104 associated with the auxiliary frame .20 and the motor 102,

has a drive shaft 106 which is connected to the gear 100 through a friction clutch device indicated generally by the reference character 108.

The wiper 14 is secured to a slide 110 which is slidably mounted in guideways formed in a block 112, Fig. 2. This block is supported on a bracket 114 which, inturn is adjustably mounted on the main frame 18, Fig. 1.: At its right-hand end the slide 110 is provided with an up-' standing arm which is held in engagement with an-- eccentric 122 by means of a coil spring 124, Fig. 2'. As

.- F? A 2,980,930 p a Patented Apr. 25, 196;,

on a shaft 126, is'rotated, the slide 110 and wiper 14 will be reciprocated.

The shaft 126 is rotatably mountedon the main frame 18.by means including a bearing. bracket 13 and has secured'theret'o a sprocket 132'and a drive pulley fl s-flf which is connected to a third electric motor, or other power source, not showmbymeansof'adrive 116112 136 Pivotally mounted on thisshaftisan' arm, indicated generally by the reference character 140, which held yieldingly in the position shown' in Fig. l by meansof atension spring 142 and abutment screw 144; Journaled in the outer end of this arm on a stub shaft 146 is a second sprocket 148, and trained over these two sprocketsiis' thefichain wipercomprisinga series of, links.1' 49 to'each of which is attached'a relatively flatw'ipingimemher 1150, Figs. 1 and 4. a a V Pivotally mounted on a bracket 16!) isa lejver 162 having a rounded operating end 16 4:located beneatha laterally extending portion 166 onthe arm 140. Extend ing between the othe'rend of this lever and one armI168 of a bell-crank leverhaving a second arm 170 is a link 172. A foot treadle, not shown, is connected to the 170 by means of a link 174, and byjdepressingi this. treadle, against the resistance of. a return spring, 176, the operator may swing; the arm 170 in a counterclockwise direction, thereby, to elevate the chain wiper 16. 7

The edge gage roll 24 is rotatablymounted on the. upper end of an arm 180'which is secured'to the'bracketl 114, Fig. 1, While the shoe bottom rest 26, which is" shapedras shown in Fig. 4, is-adjustably mounted onthe bearing block 62, by means of screws 182, Fig. 2'.

As viewed from the front of the machine,.i.e., from the right in Fig. 1, the shafts 40 and 60 are inclined to the right from the vertical, and this angle of inclination may be varied by swinging the auxiliary frame 20 about a trunnion bolt 190, Fig. 1, and then locking it in the desired position of adjustment by means of a clamp nut 192 on the bolt and a clamp screw 194 which is received within an arcuate slot 196 in the main frame '18. The 'main frame is also pivotally mounted on the column 22 by means of a rockshaft 200, and may be adjusted about the axis of this shaft upon release of a clamp nut 202 associated with an arcuate supporting arm 20,4. Thus, the main frame 18 and auxiliary frame 20 which is carried thereby may be swung in a counterclockwise direction, Fig. 1, to incline the shafts 40 and 60'upwardly and away from an operator standing in front of the machine.

In use, with the several drive motors running, the operator, after depressing the treadle, not shown, to elevate the wiper 16, introduces the lasting marginL "of the stock to. be lasted, herein illustrated as the coverof a platform shoe Sh, assembled on a last with a sock-lining S and platform P, the marginal portion of which cover has'been coated with a band of cement C, between the rolls 10 and 12, with the-bottom of the shoe tipped downwardly away from the wiper 14. Next, as the shoe is swung into aposition in Which'its bottom surface adjacent to the rolls 1t and 12 is substantially horizontal and held'in engagement with the shoe rest 26,v thetreadleis released, thereby permitting the wiper 16 to. -be held an yieldingly in engagement with the lasting margin L as it'leaves the rolls. h

Now, as the operator supports the shoeand holds its marginal edge in engagement with the edge gage. roll' 24 and the bottom of the shoe in engagement with the shoe 5 rest 26 and wipers 14 and 16, the shoe will be fedflalong and the lasting margin of the stock L will lac-subjected to a tensioning action by the rolls 10- and 12.: the lasting'margin of the stock L emerges fro'm 'between thei gripof the two rolls 10 and 12 and feed wl1'eel'30, a 7 narrow portion of it is first wiped inwardly 'ove'r'the marginal edge of the bottom of the shoe by meansof? the rapidly reciprocatin'g wiper 14, Fig. 4'; andiimmediaately thereafterthe lastingmargin, throughoutits entire: width, is wiped inwardly over and pressed against the" bottom of the shoe by the continuously acting chain wiper 16.

The roll 12 and feed wheel 30 are driven in opposite directions at substantially the same peripheral speed, which is considerably slower than the speed of the roughing tool 32 and such that the operator has no difficulty in supporting and guiding the' shoe being lasted as it is fed along. On the other hand, the roughing tool 32, which is provided with sharpened teeth of any desired shape and arrangement, herein illustrated by way of example as 'a series of cutting teeth 250 arranged in the shape of a spiral band with a chip clearance space 252 therebetween, is driven at a relatively higher speed. Ac-

cordingly, inasmuch as the sharpened teeth 250 cut away or abrade the outermost-,surface layer of the lasting margin, see 254, Fig. 4, with much less frictional resistance than that afforded by the duller serrations on the roll 12 and feed wheel 30, the shoe travels at aslower speed determined by these i two elements. However, while roughing or abrading; the surface of" the lasting margin, the roughing tool 32', exerts africtional force on thelasting; margin, of the stock extendingin a direction normal to its axisand in its plane of rotation which forcehas'a component tending to tension the stock heightwise of the shoe and a" component tending to feed the shoe, much in thesa me manner as-anordinary tensioning and feeding wheel. As shown'in Fig; 4, that portion of the lasting margin which is engaged by the feed wheel 30*isnot roughened or abraded and remains as anarrow safety zone-256 at the very edgeof the bottom' ofthe shoe. If for any reason it is desired to extend the'roughened" area out to the marginal edge of the bot-' tom of the shoe, the feed wheel 30may, be eliminated. In" the particular mechanical arrangement herein illustrated,'this may be accomplished by decreasing the outer diameter of the wheel portioni30 and extending the tool 32 downwardly thereover.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of'the United States is: Y

l. ,A machine for lasting shoeshavinga pairofdriven rotary members mounted on axes which lie in a common plane for engaging between their peripheral surfaces the opposite sidesof the lasting margin of stock to be lasted, means associated with said members for so guiding a shoe relatively thereto that frictional forces are exerted on the lastingmargin by said rotary members in a direction tending to tension the stock heightwise of the shoe and in a' direction tending to' feed the shoe along, the peripheral surface of 'oneiof said rotary members which engages the inside of the lasting margin being roughened to augment its frictional action and. the peripheral surfaceofthe other of'said'irotarymembers being provided with sharpened teeth for abrading the outside surface o'f 'said lasting marginthroughout substantially its entire width, means for driving saidfirst-mentioned rotary mem-- bar at apredetermined speed, means for driving thesecond-rnentloned rotary member at aconsiderably higher speed than the other said rotary member, and means adjacentto' said rotary members for wiping the rough-, ened lasting margin of "the ten'sioned' stock inwardly over and for pressing it against the bottom of theshoe.

2'. Agm'achine for lasting'shoes having a pair of driven rotary 'members'mountedion' axeswhich lie in a common plane for. engaging'between-their. peripheral surfaces the oppositesides of the-lastingimargin of'stock tobe lasted,

means associated with said members fori so guiding a shoe relatively thereto that frictional forces areexerted on the lasting margin by saidrotary members 'in'a direction-tending to -:tension the stock heightwise of the shoe andin a direction tendingrto feed the; shoe along, the peripheral surface of-the one of said rotary members i which engages the inside of the lasting margin' being:

roughened to augment its frictional action andthe-periphe sur as of the o h o s i t y m b s be provided with sharpened teeth for abrading the outside of said lasting margin throughout substantially its entire width, means for driving said first-mentioned rotary member at a predetermined speed, means for driving the second-mentioned rotary member at a considerably higher speed than the other said rotary member, and means adjacent to said rotary members for continuously wiping the roughened lasting margin of the tensioned stock inwardly over and for pressing it against the bottom of the shoe.

3. A machine for lasting shoes having a pair of driven rotary members mounted on axes which lie in a common plane for engaging between their peripheral surfaces the opposite sides of the lasting margin of stock to be lasted, means associated with said members for so guiding a shoe relatively thereto that frictional forces are exerted on the lasting margin by said rotary members in a direction tending to tension the stock heightwise of the shoe and in a direction tending to feed the shoe along, the peripheral surface of the one of said rotary members which engages the inside of the lasting margin being roughtened to augment its frictional action and the peripheral surface of the other of said rotary members being provided with sharpened teeth for abrading the outside of said lasting margin throughout substantially its entire width, means for driving said first-mentioned rotary member at a predetermined speed, means .for driving the second-mentioned rotary member at a considerably higher speed than the other said rotary member, and means including a reciprocating wiper and a continuously operating chain wiper adjacent to said rotary members for Wiping the roughened lasting margin of the tensioned stock inwardly over and for pressing it against the bottom of the shoe.

4. A machine for lasting shoes having a pair of driven rotary members mounted on axes which lie in a common plane for engaging between their peripheral surfaces the opposite sides of the lasting margin of stock to be lasted, means associated with said rotary members for so guiding a shoe relatively thereto that frictional forces are exerted on the lasting margin by said rotary members in a direction tending to tension the stock heightwise of the shoe and in a direction tending to feed the shoe along, the peripheral surface of the one of said rotary members which engages the inside of the lasting margin being roughened to augment its frictional action and the peripheral surface ofthe other of said rotary members being provided with sharpened teeth for abrading the outside of said lasting margin, means for driving said first-mentioned rotary member at a predetermined speed, means for driving the second-mentioned rotary member at a considerably higher speed than the other of said rotary members, a third rotary member arranged coaxially with the second-named rotary member and having a roughened peripheral surface for engaging the outside of the lasting margin of the stock, means for driving said third member at substantially the same speed as the speed of the first-mentioned rotary member, and means adjacent to said rotary members for wiping the roughtened lasting margin of the tensioned stock inwardly over and for pressing it against the bottom ofthe shoe.

References Cited in the file of this patent UNITED STATES PATENTS 2,130,553 LeGault Sept. 20, 1938 2,429,306 Carr Oct. 21, 1947 2,516,942 Baker Aug. 1, 1950 2,673,993 Cuozzo Apr. 6, 1954 2,736,045 Kamborian Feb. 28, 1956 2,805,431 Schwabe Sept. 10, 1957 

